I have a problem as i am currently running Ubuntu Terminal on Windows 10. I also have XMing installed as my X-server(I use XMing for qemu,etc...). And i am trying to run this SDL2 Program. So i have this for main.cpp:
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <SDL2/SDL.h>
#include <GL/gl.h>
int main(int argc, char *argv[])
{
int final_status = 1;
SDL_Window *window;
SDL_GLContext openGL_context;
if (SDL_Init(SDL_INIT_VIDEO)) {
fprintf(stderr, "Unable to initialize SDL: %s\n",
SDL_GetError());
return 1;
}
window = SDL_CreateWindow("My Demo", SDL_WINDOWPOS_CENTERED,
SDL_WINDOWPOS_CENTERED, 640, 480,
SDL_WINDOW_OPENGL);
if (!window) {
fprintf(stderr, "Can't create window: %s\n", SDL_GetError());
goto finished;
}
openGL_context = SDL_GL_CreateContext(window);
if (!openGL_context) {
fprintf(stderr, "Can't create openGL context: %s\n",
SDL_GetError());
goto close_window;
}
/* drawing code removed */
final_status = 0;
SDL_GL_DeleteContext(openGL_context);
close_window:
SDL_DestroyWindow(window);
finished:
SDL_Quit();
fprintf(stdout, "done\n");
fflush(stdout);
return final_status;
}
And then when i run g++ main.cpp -lSDL2
, i get this output:
Can't create window: Couldn't find matching GLX visual
done
I have tried to search how to solve this GLX Problem but can't seem to find a solution for it. Help would be greatly appreciated!
Ensure that GLX is installed correctly by running glxinfo
. At the bottom, you'll find the list of supported visuals. Here's mine:
1 GLX Visuals
visual x bf lv rg d st colorbuffer sr ax dp st accumbuffer ms cav
id dep cl sp sz l ci b ro r g b a F gb bf th cl r g b a ns b eat
----------------------------------------------------------------------------
0x022 24 tc 0 24 0 r y . 8 8 8 0 . . 0 16 0 0 0 0 0 0 0 None
Try running the following before running the SDL2 program:
export SDL_VIDEO_X11_VISUALID=
This causes SDL to go down a different code path to find the visual. You can also try hardcoding the visual to the visual id from glxinfo
:
export SDL_VIDEO_X11_VISUALID=0x022
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